LAPACK  3.9.0
LAPACK: Linear Algebra PACKage
Functions/Subroutines
dlasq3.f File Reference

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Functions/Subroutines

subroutine dlasq3 (I0, N0, Z, PP, DMIN, SIGMA, DESIG, QMAX, NFAIL, ITER, NDIV, IEEE, TTYPE, DMIN1, DMIN2, DN, DN1, DN2, G, TAU)
 DLASQ3 checks for deflation, computes a shift and calls dqds. Used by sbdsqr. More...
 
dlasq6
subroutine dlasq6(I0, N0, Z, PP, DMIN, DMIN1, DMIN2, DN, DNM1, DNM2)
DLASQ6 computes one dqd transform in ping-pong form. Used by sbdsqr and sstegr.
Definition: dlasq6.f:121
disnan
logical function disnan(DIN)
DISNAN tests input for NaN.
Definition: disnan.f:61
dlasq5
subroutine dlasq5(I0, N0, Z, PP, TAU, SIGMA, DMIN, DMIN1, DMIN2, DN, DNM1, DNM2, IEEE, EPS)
DLASQ5 computes one dqds transform in ping-pong form. Used by sbdsqr and sstegr.
Definition: dlasq5.f:146
dlasq4
subroutine dlasq4(I0, N0, Z, PP, N0IN, DMIN, DMIN1, DMIN2, DN, DN1, DN2, TAU, TTYPE, G)
DLASQ4 computes an approximation to the smallest eigenvalue using values of d from the previous trans...
Definition: dlasq4.f:153
dlamch
double precision function dlamch(CMACH)
DLAMCH
Definition: dlamch.f:70